Electric air heater



Dec. 18, 1928.

V. G. VAUGHAN ELECTRIC AIR HEATER Filed June 4, 1927 WITNESSES INVENTORMafia/- 6 1609/90.

ATTORNEY the casin Patented Dec. 18, 1928.

UNITED .STATES PATENT OFFICE.

VICTOR G. VAUGHAN, OF MANSFIELD, OHIO, ASSIGNOB TO WESTINGHOUSE ELEC-TRIO & MANUFACTURING COMPANY,

A COBPQBATION OI PENNSYLVANIL.

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Application fled June 4,

My invention relates to electrical heaters and particularly toautomobile engine heaters.

An object of my invention is to provide a relatively sim le and compactautomobile engine heater t at shall embody a minimum number of parts andthat shall ermit of bein section.

A heater designated generall b thenumeral 11 comprises a perforated tuular cas;

ing 12, a substantially closed'end cap 13, a

centrally apertured end cap 14, and an end cover 15. The tubular casinmay be perforated in amp) manner, and is shown as eing provided with aplurality of circular openings 16' and square or lozenge shaped openings17. While I have illustrated only a few of these respectiveperforations, it is to be understood that the entire surface of thecasing 12 is provided with such openings. s The end cap 13 issubstantiallysolid and of dish shape and is secured to one end of 12 byan suitable means, such as spot wel ing. A ook member 18 is provided,which may also be secured to the easportion. 12

ing 12 by spot welding.

he'end ca 14 is also of dish sha e and the riphera portion thereof may espot wel ed to the other end of the casing 12. It is provided with acentral aperture 19, the walls of which are punched outwardly toconstitute a peripheral flan e portion 21. a

A heating unit is locate I within the easing 12 and comprises a singlerefractory resistor-supporting member 22 having a reduc'ed end portion,which is provided with a helically extending groove 23 in the surfacethereof for receiving a resistor member 24 which comprises a helicallywound resistor wire. I One end portion of the resistor-supporting suitale or desired 1927, Serial No. 196,482. V

member 22 is made in the form of an expanded collar 25 to provide ashoulder 26 which is in operative engagement with the outer edge portionof the flange 21. The end cover member 15 is of substantially coneshape, as is shown in the drawing, and is of such dimensions bothlaterallyand longitudinally of the heater as to tightly clamp therefractory resistor supporting member 22 in its proper operativeposition, as shown in the drawing, with the shoulder portion 26 againstthe edge of the flange 21 and with the outer end of the collar wedgedwithin the cover member 15. A plurality of sheet metal screws 27 ex--tend through the peripheral ortion of the cover-15 and through the encap 14 to securely hold the cover member in its proper operativeposition against the cap, and to v the end of the collar portion 25,which terminal members may comprise machine screws 28 and 29 to whichthe respective terminals of the resistor 24 may be connected and towhich may also be connected the twin conductors of a conductor cord 31,of the usual type. The conductor cord 31 has a knot 32 tied thereinclose to the inner end thereof, and a perforated disc 33 of a suitableelectric-insulating material is located thereon and may engage a bushing34 of electric-insulating material which is located within an endopening in the cover member 15, and through which the cord 31 extends. Ascrew connecting plug 35 is mounted on the other end of the conductorcord 31 to permit of connectin the heater to a suitable source of supplyof e ectric energy.

The refractory resistor-supporting member 22 is a unitary member and hasthe record, after which t e cord may be pushed through the bushing 34located in the cover member 15, which cover member may then be locatedin its proper operative osition against the end cap 14 and securethereagainst by the sheet metal screws 27 oeyiemy invention hu.

Jeiy simple and. compact air a minimum numtm' of esseuv H 1 i)! (1.

Various modifications may be made in the device embodying my inventionWithout departing from the spiit and scope thereof, and I desire,therefore, that only sveh limi- Cations shalt be placed thereon as areimposed the prior art or are set forth in the appended c taim.

I claim my invention:

In an air heater in combination, a using an apeitiired end cap therefor,a refractorysupporting member having one portion extending through theaperture into the 035i 21g VICTOR G. VAUGHAN.

